API gets OAuth 2 support plus an Objective-C client library

Everything you need to know about authenticating with OAuth is included on the Getting Started page of our API docs. As with any of our API updates, we've also updated all our officially supported client libraries to support authentication with OAuth.

We're also stoked to announce that we've open sourced a new client library for developers creating Mac OS X or iOS apps. The CreateSend Objective-C library implements the complete functionality of the API and makes it simple to integrate Campaign Monitor into Cocoa & Cocoa Touch applications.

We used CreateSend Objective-C to build our Enlist iPad app and we're excited to see what other Mac OS X or iOS developers will build using this open source library.